3074S M/T, a confusing and frustrating happening

Woodfin · 07-25-2017, 08:16 PM

Racers, I bring this topic back for an update.

To review, I installed, simply for maintenance, a new set of M/T #3074S [32 x 14 x 15S] The old set, although performing well, was two plus years old with many runs.

These are on my S-10, Super 10 super stocker that I also bracket race. It runs 6.30 - 6.40 in the cooler months, 6.40 - 6.50 in our Texas heat.

The stiff side wall has worked as expected for me with several other packages. Also, with my Truck, it has a 5.57 rear gear, 1.98 low and 6600 converter so it hits hard at the trans brake release, even with the small 327 engine.

So, again to review, the first outing with new tires produced chatter and slip. [same tire, same part number, same air pressure] I even talked with M/T to verify the tire was the same design, no changes.

After two frustrating outings of chasing the cause, and chasing the dial, and chasing the reaction times, at the recommendation of another race who runs the same tire and similar weight and performance, I made a drastic [for me] change. I am not prone to make large changes, I am usually slow and methodical with changing.

AnyWho, even though the truck had worked well at 11 pounds with old tires, and even though the general feedback was "hitting the tire too hard, needs more air" [we had it as high as 13 pounds]

Well, just go figger, dropped air pressure to 8 pounds and voila, dead hook with the expect ET.

It would be reasonable for a person to expect, at my age and with my experience, such lessons would have already been learned, yet, that expectation is wrong. It is my observation that the lessons are an on-going and never ending process.

07-25-2017, 08:16 PM	#8
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 540 Likes: 8 Liked 288 Times in 109 Posts	Re: 3074S M/T, a confusing and frustrating happening Racers, I bring this topic back for an update. To review, I installed, simply for maintenance, a new set of M/T #3074S [32 x 14 x 15S] The old set, although performing well, was two plus years old with many runs. These are on my S-10, Super 10 super stocker that I also bracket race. It runs 6.30 - 6.40 in the cooler months, 6.40 - 6.50 in our Texas heat. The stiff side wall has worked as expected for me with several other packages. Also, with my Truck, it has a 5.57 rear gear, 1.98 low and 6600 converter so it hits hard at the trans brake release, even with the small 327 engine. So, again to review, the first outing with new tires produced chatter and slip. [same tire, same part number, same air pressure] I even talked with M/T to verify the tire was the same design, no changes. After two frustrating outings of chasing the cause, and chasing the dial, and chasing the reaction times, at the recommendation of another race who runs the same tire and similar weight and performance, I made a drastic [for me] change. I am not prone to make large changes, I am usually slow and methodical with changing. AnyWho, even though the truck had worked well at 11 pounds with old tires, and even though the general feedback was "hitting the tire too hard, needs more air" [we had it as high as 13 pounds] Well, just go figger, dropped air pressure to 8 pounds and voila, dead hook with the expect ET. It would be reasonable for a person to expect, at my age and with my experience, such lessons would have already been learned, yet, that expectation is wrong. It is my observation that the lessons are an on-going and never ending process.